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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > ABS , DSC problem!



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      01-17-2012, 07:18 AM   #1
Clayshooter
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Angry ABS , DSC problem!

After 15 m/h come on lights dsc, abs, brake. When I brake below 15 m/h lights off. When accelerate more 15 m/h come lights again on. I was on diagnostic in ECU no errors, and canon body can find prodlem. Dsc ECU I changed but it didn't help.
Please help me?!!!
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      01-17-2012, 07:21 AM   #2
JonDiesel@ColemanAutobody
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wheel speed sensor ?
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      01-17-2012, 08:15 AM   #3
Clayshooter
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When computer check all it's ok. But when i begin to drive lichts come, when stop and check with diagnistik computer no error codes in ecu. Before 8 months ago i changed dsc ecu, because was error in this case. Now mechanic tries change to new dsc block and it does"t help, they check all wheel sensors, all are ok.
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      01-17-2012, 09:54 AM   #4
3Coupe4Me
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When you say DSC block do you mean DSC control unit? Are they reprogramming the new one when they put it in?
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      01-17-2012, 01:51 PM   #5
Clayshooter
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Yes, sure. Today mechanic looks for wiring problem. The biggest problem error don't save in ECU.
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      01-17-2012, 06:07 PM   #6
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He must not have a proper diagnostic tool then. What is he/you using to scan your car?

To my knowledge, problems with the DSC or any other major system in the car will store shadow faults. You need a proper tool to pull those. INPA, GT1, DIS, Autologic, etc.

It could be related to the wheel speed sensor, ABS sensor, steering angle sensor, etc.

You really need to pull those shadow faults to find out.

No normal autozone or pepboys scan tool will pull those shadow faults.
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      01-18-2012, 04:58 AM   #7
Clayshooter
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Today i got my car from shop. Problem was in minus wire, mechanic fix it and now it's ok.
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      01-18-2012, 08:03 AM   #8
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You know there was a TSB out for the positive battery connection at the fuse panel. If you still have problems, look there.
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